Multi select call back

Replies: 0

Hello,

I follow your tuto for callback. It work well with classic dropdown but not with multi-select.
Under the ‘Choices Callback’ field I don’t see the ‘Parent Option’

So the function don’t work:

function getStates() {
//get the value from the ‘parent’ field, sent via the AJAX post.
$choice = $_POST[‘parent_option’];

I would like :
Select a first categorie
Then open a multi-select choice for this categorie

Thank you